dt-bindings: iio: dac: add support for AD3532R/AD3532

The AD3532R/AD3532 is a 16-channel version of the AD3530R/AD3530.
This adds compatible strings for the AD3532R/AD3532.

Signed-off-by: Kim Seer Paller <kimseer.paller@analog.com>

Author: kseerp

Documentation/devicetree/bindings/iio/dac/adi,ad3530r.yaml

@@ -27,6 +27,8 @@ properties:
       - adi,ad3530r
       - adi,ad3531
       - adi,ad3531r
+      - adi,ad3532
+      - adi,ad3532r
 
   reg:
     maxItems: 1